(which also offers a 5k)or a full marathon like the Hamptons Marathon, which also offers a full, half, or 5k. http://www.hamptonsmarathon.com/.
So whatever your reason is to run, do it for yourself. Do it to get your body into the best shape of your life. Your body mind and soul will thank you. And at the same time, you can help others by doing it for a great cause. Here are some other links to help you get started. Even if you just start off doing a walk, you are still doing better then everyone at home sitting on the couch. Get out there today!
For great running gear, also check out www.nike.com
For iPhone users, download the Nike+ app.
Lists of walks, and runs: